Вычислите 1)9/25-7/20 2)37/42-17/24 3)11/24-3/16

9/25 - 7/20 = 36/100 - 35/100 = 1/10037/42 - 17/24 = 148/168 - 119/168 = 29/16811/24 - 3/16 = 22/48 - 9/48 = 13/48